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  4. Length is measured in metre and time in second as usual. But a new unit of mass is so chosen that G=1. This new unit of mass is equal to

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Q. Length is measured in metre and time in second as usual. But a new unit of mass is so chosen that $G=1$. This new unit of mass is equal to

Physical World, Units and Measurements

Solution:

New unit of mass is $\frac{1}{6.67 \times 10^{-11}} kg$
i.e., $1.5 \times 10^{10} kg$